Bumps growing behind the ears accompanied by obvious pressure pain, it is possible that long-term sweating, exercise and many other factors, resulting in the body androgen secretion is more vigorous, the formation of folliculitis, because the mouth of the follicle is blocked, the follicle inside a large number of bacterial growth after the cause, scattered distribution, the appearance of the red, you can see white pus on top of the red bumps, the disease can also be grown on the chest or face. The disease can also be found on the chest or face. In addition, after the upper respiratory tract infection caused by lymph node enlargement, will also appear in the area of obvious pressure pain, and trauma stimulation of the epidermis after the formation of epidermal cysts, but also the formation of painful pimples, it is recommended that before the symptoms are completely improved, should not eat chili, eat less sweets, reduce the late night to prevent the worsening of the symptoms.